<template>
  <div class="cart">
    <h4>全部商品</h4>
    <div class="cart-main">
      <div class="cart-th">
        <div class="cart-th1">全部</div>
        <div class="cart-th2">商品</div>
        <div class="cart-th3">单价（元）</div>
        <div class="cart-th4">数量</div>
        <div class="cart-th5">小计（元）</div>
        <div class="cart-th6">操作</div>
      </div>
      <div class="cart-body">

        <ul class="cart-list" v-for="(cart,index) in cartInfoList" :key="cart.id">
          <li class="cart-list-con1">
            <input type="checkbox" 
            name="chk_list" 
            :checked="cart.isChecked==1"
            @change="updateChecked(cart,$event)">
          </li>
          <li class="cart-list-con2">
            <img :src="cart.imgUrl">
            <div class="item-msg">{{cart.skuName}}</div>
          </li>
         
          <li class="cart-list-con4">
            <span class="price">{{cart.skuPrice}}</span>
          </li>
          <li class="cart-list-con5">
            <a href="javascript:void(0)" @click="handler('minus',-1,cart)" class="mins" >-</a>
            <input autocomplete="off" type="text" @change="handler('change',$event.target.value*1,cart)" :value="cart.skuNum" minnum="1" class="itxt">
            <a href="javascript:void(0)" @click="handler('add',1,cart)" class="plus">+</a>
          </li>
          <li class="cart-list-con6">
            <span class="sum" >{{cart.skuNum*cart.skuPrice}}</span>
          </li>
          <li class="cart-list-con7">
            <a href="javascript:void(0)" @click="deleteCartByID(cart)" class="sindelet" >删除</a>
            <br>
            <a href="#none">移到收藏</a>
          </li>
        </ul>
      </div>
    </div>
    <div class="cart-tool">
      <div class="select-all">
        <input class="chooseAll" type="checkbox" :checked="isAllCheck">
        <span>全选</span>
      </div>
      <div class="option">
        <a href="#none">删除选中的商品</a>
        <a href="#none">移到我的关注</a>
        <a href="#none">清除下柜商品</a>
      </div>
      <div class="money-box">
        <div class="chosed">已选择
          <span>0</span>件商品</div>
        <div class="sumprice">
          <em>总价（不含运费） ：</em>
          <i class="summoney">{{totalPrice}}</i>
        </div>
        <div class="sumbtn">
          <router-link to="/trade" class="sum-btn"  target="qwewq">结算</router-link>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
import {mapGetters} from 'vuex'
import _ from "lodash";

  export default {
    name: 'ShopCart',
    mounted() {
      this.getData()
    },
    computed:{
      ...mapGetters(['cartList']),
      cartInfoList(){
        return this.cartList.cartInfoList || []
      },
      // 计算总价
      totalPrice(){
        let sum = 0;
        this.cartInfoList.forEach(item=>{
            // console.log(item);
            if(item.isChecked==1){
              sum+=item.skuPrice*item.skuNum
            }
        })
        return sum
      },
      

      // 是否全选
      isAllCheck(){
        let flag = false
       this.cartInfoList.forEach(item=>{
         if(item.isChecked==1){
           flag = true
         }else if (item.isChecked ==0){
           flag = false
         }
       })
       return flag
      },

    },
    methods: {
      // 获取个人购物车的信息
      getData(){
        this.$store.dispatch('getCartList')
      },
      // 修改某个产品的个数
      handler:_.throttle(async function (type,disNum,cart) {
    //  async handler(type,disNum,cart){
        // console.log(type,disNum,cart);
        switch(type){
          // 加号
          case "add":
            // 带给服务器变化量
            disNum = 1
            break;
          case "minus":
              // 判断产品的个数需要大于1，才能传递给服务器
              disNum = cart.skuNum >1 ?-1:0
            break;
          case "change":
            // 用户输入非法字符
            if(isNaN(disNum)||disNum<0){
              disNum = 0
            }else{
              disNum = parseInt(disNum) - cart.skuNum
            }
            break;
        }
        // 派发action
        // 尝试成功和失败
        try{
          // 修改成功
            await this.$store.dispatch('addShopCart',{skuId:cart.skuId,skuNum:disNum})
            // 再一次获取服务器的最新数据进行展示
          this.getData()
        }catch(error){
         console.log(cart.skuId);
        }
     },1000),
   
     async deleteCartByID(cart){
       try{
         await this.$store.dispatch('deleteCartListBySkuId',cart.skuId)
        this.getData()
       }catch(error){
         console.log(cart.skuId);
         console.log(error.message);
       }
     },

     async updateChecked(cart,event){
        // console.log(event.target.checked);
          try{
            let checked = event.target.checked?1:0
            await this.$store.dispatch('updateChecked',{skuId:cart.skuId,isChecked:checked})
            this.getData()
          }catch(error){
            console.log(error.message);
          }
       },
    },
  }
</script>

<style lang="less" scoped>
  .cart {
    width: 1200px;
    margin: 0 auto;

    h4 {
      margin: 9px 0;
      font-size: 14px;
      line-height: 21px;
    }

    .cart-main {
      .cart-th {
        background: #f5f5f5;
        border: 1px solid #ddd;
        padding: 10px;
        overflow: hidden;

        &>div {
          float: left;
        }

        .cart-th1 {
          width: 25%;

          input {
            vertical-align: middle;
          }

          span {
            vertical-align: middle;
          }
        }

        .cart-th2 {
          width: 25%;
        }

        .cart-th3,
        .cart-th4,
        .cart-th5,
        .cart-th6 {
          width: 12.5%;

        }
      }

      .cart-body {
        margin: 15px 0;
        border: 1px solid #ddd;

        .cart-list {
          padding: 10px;
          border-bottom: 1px solid #ddd;
          overflow: hidden;

          &>li {
            float: left;
          }

          .cart-list-con1 {
            width: 15%;
          }

          .cart-list-con2 {
            width: 35%;

            img {
              width: 82px;
              height: 82px;
              float: left;
            }

            .item-msg {
              float: left;
              width: 150px;
              margin: 0 10px;
              line-height: 18px;
            }
          }

          // .cart-list-con3 {
          //   width: 20.8333%;

          //   .item-txt {
          //     text-align: center;
          //   }
          // }

          .cart-list-con4 {
            width: 10%;

          }

          .cart-list-con5 {
            width: 17%;

            .mins {
              border: 1px solid #ddd;
              border-right: 0;
              float: left;
              color: #666;
              width: 6px;
              text-align: center;
              padding: 8px;
            }

            input {
              border: 1px solid #ddd;
              width: 40px;
              height: 33px;
              float: left;
              text-align: center;
              font-size: 14px;
            }

            .plus {
              border: 1px solid #ddd;
              border-left: 0;
              float: left;
              color: #666;
              width: 6px;
              text-align: center;
              padding: 8px;
            }
          }

          .cart-list-con6 {
            width: 10%;

            .sum {
              font-size: 16px;
            }
          }

          .cart-list-con7 {
            width: 13%;

            a {
              color: #666;
            }
          }
        }
      }
    }

    .cart-tool {
      overflow: hidden;
      border: 1px solid #ddd;

      .select-all {
        padding: 10px;
        overflow: hidden;
        float: left;

        span {
          vertical-align: middle;
        }

        input {
          vertical-align: middle;
        }
      }

      .option {
        padding: 10px;
        overflow: hidden;
        float: left;

        a {
          float: left;
          padding: 0 10px;
          color: #666;
        }
      }

      .money-box {
        float: right;

        .chosed {
          line-height: 26px;
          float: left;
          padding: 0 10px;
        }

        .sumprice {
          width: 200px;
          line-height: 22px;
          float: left;
          padding: 0 10px;

          .summoney {
            color: #c81623;
            font-size: 16px;
          }
        }

        .sumbtn {
          float: right;

          a {
            display: block;
            position: relative;
            width: 96px;
            height: 52px;
            line-height: 52px;
            color: #fff;
            text-align: center;
            font-size: 18px;
            font-family: "Microsoft YaHei";
            background: #e1251b;
            overflow: hidden;
          }
        }
      }
    }
  }
</style>